What firmware are you on? As its likely that your ps3 is corrupt and unable to access the drive and the only way to fix this is send back, or jailbreak and re flash the same firmware.
This is a very old fault and has been fixed twice over the years with quick patches from Sony as and when it happens, but this time with yourself and many others including myself can only be fixed with a downgrade card, because you have to re flash without the drive fitted, then after it will format the drive again as normal.
I have fixed 3 this way and twice on the same unit. There may also be other ways. but this works every time. Unless your on 3.56 that is.
So don't waste your time with the drive its not that, get a E3 card reader.